the only thing i can do here is tell you a couple of tunes ive got that use the same samples the sample in the na na na is from hi liner loving you which is a big piano tune can upload it if you require
and i also have a big 93 piano tune that uses the same samples as in tisera4 called mad badger which is on the blue ep by the cotton club can upload this too........not much help i know but you never know